Hey Andrew, the picture of the tulips is very cool. I am actually a little surprised that you had that much control over the depth of field with a point and shoot. It came out great!
DSLRs are so essential for indoor events. You have so many options with hotshoe flashes, fast lenses and high ISO that you just can't get with a point and shoot. I am actually taking mine to a rehearsal dinner for pictures next weekend. It should be interesting because shooting pictures of people is not something I usually do.